Two friends argue over who brushes their teeth more often. To settle the argument, they keep track of the number of mornings and nights they brush
and calculate a probability. These are shown in the table.
Braxton
Arabella
0.85
0.79
Probability of brushing
In morning
Probability of brushing
In evening
0.72
0.81
Who is more likely to brush both morning and evening? Assume all events are
independent

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

sweetheart, there isn't a cube below.

the first domain and range set to the left is matched with the top relation, and the second set the set in the middle goes with the bottom relation.